预防性使用能及时保护发动机，这是由于磨损降低和润滑性改善，以减少机械损伤。

Precautious use can protect the engine in time from mechanical damage due to reduction of wear and tear and improvement in lubrication.

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机械密封：密封面、密封垫及轴封等元件必须完好，否则将导致过度泄漏，对有磨损或损伤的元件必须更换。

Mechanical seal: seal face, gasket and shaft seal, etc parts must be undamaged, otherwise will result in over leakage, sure to change parts with wear and tear or damage.

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假体压配式固定避免了螺钉的使用，因为其会导致血管神经损伤以及螺钉和臼杯磨损的风险。

Press-fit components avoid the need for screw placement, which carries the added risks of neurovascular injury and fretting wear between screw and shell.

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